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  1. Hacker - Wikipedia

    Hackers who work to keep data safe from other hackers by finding system vulnerabilities that can be mitigated.

  2. Hackers threaten to leak data after breaching University of ...

    1 day ago · The hackers sent out mass-emails using official University of Pennsylvania email accounts, and threatened to leak university data.

  3. What is a hacker? | Definition from TechTarget

    Mar 31, 2025 · Learn what hacking is, the different types of hackers and common hacking techniques in order to keep your organization secure from cybercrime.

  4. What Is a Hacker? - Cisco

    Hackers breach defenses to gain unauthorized access into computers, phones, tablets, IoT devices, networks, or entire computing systems. Hackers also take advantage of weaknesses in network …

  5. Types of Hackers - GeeksforGeeks

    Jul 11, 2025 · White hat hackers play a crucial role in enhancing security by identifying and fixing vulnerabilities, while black hat hackers pose significant threats through malicious activities.

  6. Who are hackers? All you need to know about hacking

    Hackers break into computer systems, while refers to activities that seek to compromise digital devices, such as computers, smartphones, tablets, and even entire networks.

  7. What Is Hacking? Types of Hacking & More | Fortinet

    Learn about the types of hackers, vulnerable devices to hacking, and hack prevention tips. A commonly used hacking definition is the act of compromising digital devices and networks through unauthorized …